Description
The CAT Pumps 66DX40GG1 is a high-performance, industrial-grade plunger pump designed primarily for pressure washing and fluid transfer applications. It is a “direct drive” unit, meaning it is engineered to bolt directly onto a gas engine, making it a compact and efficient choice for mobile power washers.
## Key Specifications
To understand the power behind this model, here is a breakdown of its primary operating limits:
| Feature | Specification |
| Max Flow Rate | 4.0 GPM (15.1 LPM) |
| Pressure Range | 100 to 4,000 PSI |
| Pump RPM | 3400 RPM |
| Shaft Diameter | 1″ (Hollow Shaft) |
| Inlet Port | 1/2″ NPT(F) |
| Discharge Port | 3/8″ NPT(M) |




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